公开(公告)号：US11805328B2

公开(公告)日：2023-10-31

申请号：US17638714

申请日：2020-09-04

Applicant: Google LLC

Inventor： Bill Duran ,  Adrian Mircea Proca ,  Wei Zhong ,  Siddarth Raghunathan

IPC: H04N23/951 ,  H04N23/61 ,  H04N23/667 ,  H04N23/73

CPC classification number: H04N23/951 ,  H04N23/61 ,  H04N23/667 ,  H04N23/73

Abstract: An electronic device receives a first plurality of images of a scene captured by an image sensor of an electronic device, receives an ambient light level proximate to the electronic device, and determines whether the ambient light level is less than a first threshold value. In accordance with a determination that the ambient light level is less than the first threshold value, the electronic device detects motion in the scene based on one or more of the first plurality of images. In accordance with detecting motion in the scene, the electronic device receives a second plurality of images of the scene captured by the image sensor of the electronic device, forms a composite image from two or more of the second plurality of images, and causes the composite image to be presented for display on a user device.

公开(公告)号：US10609298B2

公开(公告)日：2020-03-31

申请号：US15890254

申请日：2018-02-06

Applicant: GOOGLE LLC

Inventor： Bill Duran ,  Adrian Mircea Proca ,  Nikhil Sathe

IPC: H04N5/235 ,  G08B13/196 ,  H04N5/225 ,  H04N5/243 ,  H04N5/353 ,  H04N5/33 ,  G03B15/03 ,  H04N5/357 ,  H04N9/04

Abstract: A system and method that provides adaptive IR illumination for a camera. In some implementations, IR illumination adapts to the objects in a scene being monitored and IR illumination adaptation may be implemented in conjunction with automatic exposure and other exposure adjustment methods. Some implementations include: illuminating a scene using a first IR illumination power; capturing a first image of the scene with a camera; and determining whether a first region of the first image is underexposed or overexposed. When the first region is underexposed, the scene is illuminated at a second power level greater than the first illumination power and a second image is captured. When the first region is overexposed, the scene is illuminated at a third power level that is less than the first illumination power and a third image is captured. The operations are repeated until scene illumination is satisfactory.

公开(公告)号：US20190327416A1

公开(公告)日：2019-10-24

申请号：US16459460

申请日：2019-07-01

Applicant: GOOGLE LLC

Inventor： Bill Duran ,  Adrian Mircea Proca

IPC: H04N5/232 ,  H04N5/225 ,  H04N5/33 ,  G02B5/20 ,  H04N9/04 ,  H04N5/235 ,  H04N9/73

Abstract: A method is executed at a camera operating in a night mode in which an IR filter is not interposed between a lens assembly and sensor arrays of the camera. In the night mode, the camera receives ambient light that is not filtered by the IR filter. For each image tile, the camera determines whether the ambient light received at the tile is due to an IR light source or a light source other than an IR light source and generates a respective mode change signal accordingly. A mode change parameter is then determined as a function of a total number of the mode change signals for image tiles of the camera. Based on the mode change parameter, the camera determines whether to continue the operation of the camera in the night mode or switch the operation of the camera from the night mode to a day mode.